20902904

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{1327}}^1$

素因数の和:1523

約数の個数: 32

約数和(自身を含む): 43027200

約数和(自身を除く): 22124296

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 179, 358, 716, 1327, 1432, 1969, 2654, 3938, 5308, 7876, 10616, 14597, 15752, 29194, 58388, 116776, 237533, 475066, 950132, 1900264, 2612863, 5225726, 10451452, 20902904]

約数ペア:

[(1, 20902904), (2, 10451452), (4, 5225726), (8, 2612863), (11, 1900264), (22, 950132), (44, 475066), (88, 237533), (179, 116776), (358, 58388), (716, 29194), (1327, 15752), (1432, 14597), (1969, 10616), (2654, 7876), (3938, 5308)]